Click through every version your agent made.

Critter turns your Git commits into versions of your UI that you can browse and compare, on your own machine.

See what changed

Put two versions side by side. Highlights show what’s different, including what went missing.

Ask your agent for alternatives and switch between them in the browser. critter explore use applies the one you pick.

Will it work with my project?

Yes, if it’s a plain HTML prototype, a Vite app or a static-export Next.js app in Git. See what’s supported.

How do I set it up?

Paste the setup prompt into your agent, or run npm install -g @idamadam/critter and then critter view. Setup guide.

Are past versions screenshots?

No. Each one is your app built from that commit, so you can click around in it.

Does my code leave my machine?

No. There’s no account and nothing is uploaded.

With your agent

Read https://critter.sh/docs/getting-started.md and follow the guide to set up Critter in this project.

In your terminal

npm install -g @idamadam/critter
critter view